<div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial"><DIV>Hi Jinyoung,</DIV>
<DIV> </DIV>
<DIV>It looks like nothing wrong with your codes.</DIV>
<DIV>First of all, please check the device description file(XML) and make sure it just contains only 1 RxPDO with 7 entries and 1 TxPDO with 6 entries.</DIV>
<DIV>Then please try to use external memory to manage the internal process data for your domain. I doubt that your pointer <SPAN style="FONT-SIZE: 12pt; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin" lang="EN-US"><FONT face="Calibri"><EM>domain0_output </EM></FONT><FONT face="Arial">is clear after <SPAN style="FONT-SIZE: 12pt; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin" lang="EN-US"><FONT face="Calibri"><EM>ecrt_master_send(master).</EM></FONT></SPAN></FONT></SPAN></DIV>
<DIV> </DIV>
<DIV>if ((size = ecrt_domain_size(domain0))) {<BR> if (!(domain0_output = (uint8_t *) kmalloc(size, GFP_KERNEL))) {<BR> printk(KERN_ERR PFX "Failed to allocate %u bytes of process data"<BR> " memory!\n", size);<BR> return -1;<BR> }<BR> ecrt_domain_external_memory(domain0, domain0_output);<BR> }<BR></DIV>
<DIV>BR!</DIV>
<DIV> </DIV>
<DIV>Royal Qing</DIV>
<DIV></DIV>
<DIV id="divNeteaseMailCard"></DIV>
<DIV><BR></DIV><PRE><BR>At 2012-11-30 18:20:10,etherlab-dev-request@etherlab.org wrote:
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>Today's Topics:
>
> 1. A problem related to the pdo communication (Jinyoung Choi)
>
>
>----------------------------------------------------------------------
>
>Message: 1
>Date: Fri, 30 Nov 2012 19:20:07 +0900
>From: Jinyoung Choi <kbkbc88@gmail.com>
>Subject: [etherlab-dev] A problem related to the pdo communication
>To: etherlab-dev@etherlab.org
>Message-ID:
>        <CADsBPRSrAhDoJad1n2fyKhc8ADCW412o8b1eX-mwzYp+b68rtA@mail.gmail.com>
>Content-Type: text/plain; charset="iso-8859-1"
>
>Hi all, my name CJ from south korea.
>
>I modified an example in /example/user/main.c
>
>My goal is to communicate with slave motor drive(epos3) by using ethercat
>through SDO and PDO messages.
>
>My slave drive can get into OP state like these messages
>
>Activating master...
>
>Starting timer...
>
>Started.
>
>1 slave(s).
>
>AL states: 0x02.
>
>Link is up.
>
>EPOS3 slave 0 State 0x02.
>
>EPOS3 slave 0: online.
>
>Domain: WC 3.
>
>Domain: State 2.
>
>AL states: 0x08.
>
>EPOS3 slave 0 State 0x08.
>
>EPOS3 slave 0: operational.
>
>
>and kernel messages are like this,
>
>...
>
>[29145.133927] EtherCAT DEBUG 0: Stopping master thread.
>
>[29145.133930] EtherCAT DEBUG 0: Master IDLE thread exiting...
>
>[29145.133952] EtherCAT 0: Master thread exited.
>
>[29145.133954] EtherCAT DEBUG 0: FSM datagram is ffff8800527bd648.
>
>[29145.133955] EtherCAT 0: Starting EtherCAT-OP thread.
>
>[29145.133973] EtherCAT DEBUG 0: mmap()
>
>[29145.133975] EtherCAT DEBUG 0: Vma fault, virtual_address =
>00007fb7e9b61000, offset = 0, page = ffffea00011ffe30
>
>[29145.134008] EtherCAT DEBUG 0: Operation thread running with fsm interval
>= 10000 us, max data size=112500
>
>[29145.134010] EtherCAT WARNING 0: 1 datagram UNMATCHED!
>
>[29145.143508] EtherCAT DEBUG 0: Configuration changed (aborting state
>check).
>
>[29145.143511] EtherCAT DEBUG 0: Writing system time offsets...
>
>[29145.143512] EtherCAT WARNING 0: No app_time received up to now, but
>master already active.
>
>[29145.143513] EtherCAT DEBUG 0: Requesting OP...
>
>[29145.181179] EtherCAT DEBUG 0-0: Changing state from PREOP to OP.
>
>[29145.181182] EtherCAT DEBUG 0-0: Configuring...
>
>[29145.215005] EtherCAT DEBUG 0-0: Now in INIT.
>
>[29145.215007] EtherCAT DEBUG 0-0: Clearing FMMU configurations...
>
>[29145.235006] EtherCAT DEBUG 0-0: Clearing sync manager configurations...
>
>[29145.255046] EtherCAT DEBUG 0-0: Clearing DC assignment...
>
>[29145.274967] EtherCAT DEBUG 0-0: Configuring mailbox sync managers...
>
>[29145.274995] EtherCAT DEBUG 0-0: SM0: Addr 0x1000, Size 1024, Ctrl 0x26,
>En 1
>
>[29145.274997] EtherCAT DEBUG 0-0: SM1: Addr 0x1400, Size 1024, Ctrl 0x22,
>En 1
>
>[29145.334911] EtherCAT DEBUG 0-0: Now in PREOP.
>
>[29145.334918] EtherCAT DEBUG 0-0: Setting PDO assignment of SM2:
>
>[29145.334919] EtherCAT DEBUG 0-0: Currently assigned PDOs: 0x1600. PDOs to
>assign: 0x1600
>
>[29145.334922] EtherCAT DEBUG 0-0: Setting number of assigned PDOs to zero.
>
>[29145.334923] EtherCAT DEBUG 0-0: Downloading SDO 0x1C12:00.
>
>[29145.334924] EtherCAT DEBUG: 00
>
>[29145.334926] EtherCAT DEBUG 0-0: Expedited download request:
>
>[29145.334927] EtherCAT DEBUG: 00 20 2F 12 1C 00 00 00 00 00
>
>[29145.394874] EtherCAT DEBUG 0-0: Download response:
>
>[29145.394876] EtherCAT DEBUG: 00 30 60 12 1C 00 00 00 00 00
>
>[29145.394881] EtherCAT DEBUG 0-0: Assigning PDO 0x1600 at position 1.
>
>[29145.394882] EtherCAT DEBUG 0-0: Downloading SDO 0x1C12:01.
>
>[29145.394883] EtherCAT DEBUG: 00 16
>
>[29145.394885] EtherCAT DEBUG 0-0: Expedited download request:
>
>[29145.394885] EtherCAT DEBUG: 00 20 2B 12 1C 01 00 16 00 00
>
>[29145.454815] EtherCAT DEBUG 0-0: Download response:
>
>[29145.454816] EtherCAT DEBUG: 00 30 60 12 1C 01 00 16 00 00
>
>[29145.454820] EtherCAT DEBUG 0-0: Setting number of assigned PDOs to 1.
>
>[29145.454822] EtherCAT DEBUG 0-0: Downloading SDO 0x1C12:00.
>
>[29145.454822] EtherCAT DEBUG: 01
>
>[29145.454824] EtherCAT DEBUG 0-0: Expedited download request:
>
>[29145.454824] EtherCAT DEBUG: 00 20 2F 12 1C 00 01 00 00 00
>
>[29145.514775] EtherCAT DEBUG 0-0: Download response:
>
>[29145.514777] EtherCAT DEBUG: 00 30 60 12 1C 00 01 00 00 00
>
>[29145.514783] EtherCAT DEBUG 0-0: Successfully configured PDO assignment
>of SM2.
>
>[29145.514787] EtherCAT DEBUG 0-0: Setting PDO assignment of SM3:
>
>[29145.514787] EtherCAT DEBUG 0-0: Currently assigned PDOs: 0x1A00. PDOs to
>assign: 0x1A00
>
>[29145.514790] EtherCAT DEBUG 0-0: Setting number of assigned PDOs to zero.
>
>[29145.514792] EtherCAT DEBUG 0-0: Downloading SDO 0x1C13:00.
>
>[29145.514792] EtherCAT DEBUG: 00
>
>[29145.514794] EtherCAT DEBUG 0-0: Expedited download request:
>
>[29145.514794] EtherCAT DEBUG: 00 20 2F 13 1C 00 00 00 00 00
>
>[29145.574693] EtherCAT DEBUG 0-0: Download response:
>
>[29145.574695] EtherCAT DEBUG: 00 30 60 13 1C 00 00 00 00 00
>
>[29145.574700] EtherCAT DEBUG 0-0: Assigning PDO 0x1A00 at position 1.
>
>[29145.574702] EtherCAT DEBUG 0-0: Downloading SDO 0x1C13:01.
>
>[29145.574703] EtherCAT DEBUG: 00 1A
>
>[29145.574704] EtherCAT DEBUG 0-0: Expedited download request:
>
>[29145.574705] EtherCAT DEBUG: 00 20 2B 13 1C 01 00 1A 00 00
>
>[29145.634651] EtherCAT DEBUG 0-0: Download response:
>
>[29145.634653] EtherCAT DEBUG: 00 30 60 13 1C 01 00 1A 00 00
>
>[29145.634656] EtherCAT DEBUG 0-0: Setting number of assigned PDOs to 1.
>
>[29145.634658] EtherCAT DEBUG 0-0: Downloading SDO 0x1C13:00.
>
>[29145.634659] EtherCAT DEBUG: 01
>
>[29145.634660] EtherCAT DEBUG 0-0: Expedited download request:
>
>[29145.634661] EtherCAT DEBUG: 00 20 2F 13 1C 00 01 00 00 00
>
>[29145.694597] EtherCAT DEBUG 0-0: Download response:
>
>[29145.694599] EtherCAT DEBUG: 00 30 60 13 1C 00 01 00 00 00
>
>[29145.694603] EtherCAT DEBUG 0-0: Successfully configured PDO assignment
>of SM3.
>
>[29145.694607] EtherCAT DEBUG 0-0: SM2: Addr 0x1800, Size 19, Ctrl 0x64, En
>1
>
>[29145.694609] EtherCAT DEBUG 0-0: SM3: Addr 0x1C00, Size 15, Ctrl 0x20, En
>1
>
>[29145.714583] EtherCAT DEBUG 0 0:0: FMMU: LogAddr 0x00000000, Size 19,
>PhysAddr 0x1800, SM2, Dir out
>
>[29145.714585] EtherCAT DEBUG 0 0:0: FMMU: LogAddr 0x00000013, Size 15,
>PhysAddr 0x1C00, SM3, Dir in
>
>[29145.764458] EtherCAT 0: Domain 0: Working counter changed to 3/3.
>
>[29145.774506] EtherCAT DEBUG 0-0: Now in SAFEOP.
>
>[29145.814535] EtherCAT DEBUG 0-0: Now in OP. Finished configuration.
>
>[29145.840543] EtherCAT 0: Slave states: OP.
>
>
>------------------------------------------------------------------------------------------------
>
>
>I guess that the pdos may be sent by master module.
>
>but the actual value of objects in slave's object dictionary are not
>changed.
>
>what is the problem?
>
>please do me a favor.
>
>and this is my example code.
>
>
>/*****************************************************************************
> *
> * $Id: main.c,v 60a116ed3897 2009/07/27 10:44:16 fp $
> *
> * Copyright (C) 2007-2009 Florian Pose, Ingenieurgemeinschaft IgH
> *
> * This file is part of the IgH EtherCAT Master.
> *
> * The IgH EtherCAT Master is free software; you can redistribute it and/or
> * modify it under the terms of the GNU General Public License version 2,
>as
> * published by the Free Software Foundation.
> *
> * The IgH EtherCAT Master is distributed in the hope that it will be
>useful,
> * but WITHOUT ANY WARRANTY; without even the implied warranty of
> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
>General
> * Public License for more details.
> *
> * You should have received a copy of the GNU General Public License along
> * with the IgH EtherCAT Master; if not, write to the Free Software
> * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
>USA
> *
> * ---
> *
> * The license mentioned above concerns the source code only. Using the
> * EtherCAT technology and brand is only permitted in compliance with the
> * industrial property and similar rights of Beckhoff Automation GmbH.
> *
> ****************************************************************************/
>
>#include <errno.h>
>#include <signal.h>
>#include <stdio.h>
>#include <string.h>
>#include <sys/resource.h>
>#include <sys/time.h>
>#include <sys/types.h>
>#include <unistd.h>
>
>/****************************************************************************/
>
>#include "ecrt.h"
>
>/****************************************************************************/
>
>// Application parameters
>#define FREQUENCY 100
>#define PRIORITY 1
>
>// Optional features
>#define CONFIGURE_PDOS 1
>#define SDO_ACCESS 0
>
>/****************************************************************************/
>
>// EtherCAT
>static ec_master_t *master = NULL;
>static ec_master_state_t master_state = {};
>
>static ec_domain_t *domain0 = NULL;
>static ec_domain_state_t domain_state = {};
>
>static ec_slave_config_t *sc_epos3 = NULL;
>static ec_slave_config_state_t sc_epos3_state = {};
>
>// Timer
>static unsigned int sig_alarms = 0;
>static unsigned int user_alarms = 0;
>
>/****************************************************************************/
>
>// process data
>static uint8_t *domain0_output = NULL;
>
>#define SLAVE_DRIVE_0 0, 0
>#define MAXON_EPOS3 0x000000fb, 0x64400000
>
>// offsets for PDO entries
>
>static unsigned int off_epos3_cntlwd;
>//static unsigned int off_epos3_tvel;
>static unsigned int off_epos3_tpos;
>static unsigned int off_epos3_off_pos;
>static unsigned int off_epos3_off_vel;
>static unsigned int off_epos3_off_toq;
>static unsigned int off_epos3_moo;
>static unsigned int off_epos3_dof;
>static unsigned int off_epos3_status;
>static unsigned int off_epos3_pos_val;
>static unsigned int off_epos3_vel_val;
>static unsigned int off_epos3_toq_val;
>static unsigned int off_epos3_mood;
>static unsigned int off_epos3_dif;
>
>const static ec_pdo_entry_reg_t domain0_regs[] = {
> {SLAVE_DRIVE_0, MAXON_EPOS3, 0x6040, 0, &off_epos3_cntlwd},
> {SLAVE_DRIVE_0, MAXON_EPOS3, 0x607a, 0, &off_epos3_tpos},
> {SLAVE_DRIVE_0, MAXON_EPOS3, 0x60b0, 0, &off_epos3_off_pos},
> {SLAVE_DRIVE_0, MAXON_EPOS3, 0x60b1, 0, &off_epos3_off_vel},
> {SLAVE_DRIVE_0, MAXON_EPOS3, 0x60b2, 0, &off_epos3_off_toq},
> {SLAVE_DRIVE_0, MAXON_EPOS3, 0x6060, 0, &off_epos3_moo},
> {SLAVE_DRIVE_0, MAXON_EPOS3, 0x2078, 1, &off_epos3_dof},
> {SLAVE_DRIVE_0, MAXON_EPOS3, 0x6041, 0, &off_epos3_status},
> {SLAVE_DRIVE_0, MAXON_EPOS3, 0x6064, 0, &off_epos3_pos_val},
> {SLAVE_DRIVE_0, MAXON_EPOS3, 0x606c, 0, &off_epos3_vel_val},
> {SLAVE_DRIVE_0, MAXON_EPOS3, 0x6077, 0, &off_epos3_toq_val},
> {SLAVE_DRIVE_0, MAXON_EPOS3, 0x6061, 0, &off_epos3_mood},
> {SLAVE_DRIVE_0, MAXON_EPOS3, 0x2071, 1, &off_epos3_dif},
> {}
>};
>
>static unsigned int counter = 0;
>static unsigned int blink = 0;
>
>/*****************************************************************************/
>
>#if CONFIGURE_PDOS
>
>static ec_pdo_entry_info_t epos3_pdo_rx_entries[] = {
> {0x6040, 0, 16}, // controlword
> {0x607a, 0, 32}, // target position
> {0x60b0, 0, 32}, // position offset
> {0x60b1, 0, 32}, // velocity offset
> {0x60b2, 0, 16}, // torque offset
> {0x6060, 0, 8}, // modes of opeartion
> {0x2078, 1, 16} // digital output functionality
>
>};
>
>static ec_pdo_entry_info_t epos3_pdo_tx_entries[] = {
> {0x6041, 0, 16}, // status word
> {0x6064, 0, 32}, // position actual value
> {0x606c, 0, 32}, // velocity actual value
> {0x6077, 0, 16}, // torque actual value
> {0x6061, 0, 8}, // modes of operation display
> {0x2071, 1, 16} // digital input functionality
>};
>
>static ec_pdo_info_t epos3_pdos[] = {
> {0x1600, 7, epos3_pdo_rx_entries},
> {0x1a00, 6, epos3_pdo_tx_entries}
>};
>
>static ec_sync_info_t epos3_syncs[] = {
> {2, EC_DIR_OUTPUT, 1, epos3_pdos},
> {3, EC_DIR_INPUT, 1, epos3_pdos+1},
> {0xff}
>};
>
>#endif
>
>/*****************************************************************************/
>
>#if SDO_ACCESS
>static ec_sdo_request_t *sdo;
>#endif
>
>/*****************************************************************************/
>
>void check_domain_state(ec_domain_t *domain)
>{
> ec_domain_state_t ds;
>
> ecrt_domain_state(domain, &ds);
>
> if (ds.working_counter != domain_state.working_counter)
> printf("Domain: WC %u.\n", ds.working_counter);
> if (ds.wc_state != domain_state.wc_state)
> printf("Domain: State %u.\n", ds.wc_state);
>
> domain_state = ds;
>}
>
>/*****************************************************************************/
>
>void check_master_state(void)
>{
> ec_master_state_t ms;
>
> ecrt_master_state(master, &ms);
>
> if (ms.slaves_responding != master_state.slaves_responding)
> printf("%u slave(s).\n", ms.slaves_responding);
> if (ms.al_states != master_state.al_states)
> printf("AL states: 0x%02X.\n", ms.al_states);
> if (ms.link_up != master_state.link_up)
> printf("Link is %s.\n", ms.link_up ? "up" : "down");
>
> master_state = ms;
>}
>
>/*****************************************************************************/
>
>void check_slave_config_states(void)
>{
> ec_slave_config_state_t s;
>
> ecrt_slave_config_state(sc_epos3, &s);
>
> if (s.al_state != sc_epos3_state.al_state)
> printf("EPOS3 slave 0 State 0x%02X.\n", s.al_state);
> if (s.online != sc_epos3_state.online)
> printf("EPOS3 slave 0: %s.\n", s.online ? "online" : "offline");
> if (s.operational != sc_epos3_state.operational)
> printf("EPOS3 slave 0: %soperational.\n",
> s.operational ? "" : "Not ");
> sc_epos3_state = s;
>}
>
>/*****************************************************************************/
>
>#if SDO_ACCESS
>void read_sdo(void)
>{
> switch (ecrt_sdo_request_state(sdo)) {
> case EC_REQUEST_UNUSED: // request was not used yet
> ecrt_sdo_request_read(sdo); // trigger first read
> break;
> case EC_REQUEST_BUSY:
> fprintf(stderr, "Still busy...\n");
> break;
> case EC_REQUEST_SUCCESS:
> fprintf(stderr, "SDO value: 0x%04X\n",
> EC_READ_U16(ecrt_sdo_request_data(sdo)));
> ecrt_sdo_request_read(sdo); // trigger next read
> break;
> case EC_REQUEST_ERROR:
> fprintf(stderr, "Failed to read SDO!\n");
> ecrt_sdo_request_read(sdo); // retry reading
> break;
> }
>}
>
>#endif
>
>/****************************************************************************/
>
>void cyclic_task(){
> int i;
>
> // receive process data
> ecrt_master_receive(master);
> ecrt_domain_process(domain0);
>
> // check process data state (optional)
> check_domain_state(domain0);
>
> if (counter) {
> counter--;
> }else { // do this at 1 Hz
> counter = FREQUENCY;
>
> // calculate new process data
> blink = !blink;
>
> // check for master state (optional)
> check_master_state();
>
> // check for islave configuration state(s) (optional)
> check_slave_config_states();
>
>#if SDO_ACCESS
> // read process data SDO
> read_sdo();
> printf("read_sdo\n");
>#endif
> }
> // read process data
> //printf(" stataus word : %u\n",EC_READ_U8(domain1_pd +
>off_epos3_moo));
>
> // write process data
> EC_WRITE_U32(domain0_output + off_epos3_tpos, 0xff);
>
> // send process data
> ecrt_domain_queue(domain0);
> ecrt_master_send(master);
>
>
>}
>
>/****************************************************************************/
>
>void signal_handler(int signum) {
> switch (signum) {
> case SIGALRM:
> sig_alarms++;
> break;
> }
>}
>
>/****************************************************************************/
>
>int main(int argc, char **argv)
>{
> ec_slave_config_t *sc;
> struct sigaction sa;
> struct itimerval tv;
>
> master = ecrt_request_master(0);
> printf("ecrt_request_master is called \n");
> if (!master)
> return -1;
>
> domain0 = ecrt_master_create_domain(master);
> if(!domain0)
> return -1;
>
> if(!(sc_epos3 = ecrt_master_slave_config(
> master, SLAVE_DRIVE_0, MAXON_EPOS3))){
> fprintf(stderr, "Failed to get slave configuration. \n");
> return -1;
> }
>
> //added by kbkbc
> //if (ecrt_slave_config_sdo16(sc_epos3, 0x6040, 0x00,9 ) == 0)
> //printf("change SDO : 0x6040 \n");
>
>#if SDO_ACCESS
> fprintf(stderr, "Creating SDO requests...\n");
> if (!(sdo = ecrt_slave_config_create_sdo_request(sc_epos3, 0x6060,
>0x00, 16))) {
> fprintf(stderr, "Failed to create SDO request.\n");
> return -1;
> }
> ecrt_sdo_request_timeout(sdo, 500); // ms
>
>#endif
>
>#if CONFIGURE_PDOS
> printf("Configuring PDOs...\n");
> if (ecrt_slave_config_pdos(sc_epos3, EC_END, epos3_syncs)) {
> fprintf(stderr, "Failed to configure PDOs.\n");
> return -1;
> }
> printf("configureing PDO is completed!\n");
>#endif
> if( ecrt_domain_reg_pdo_entry_list(domain0, domain0_regs)){
> fprintf(stderr, "PDO entty registration filed! \n");
> return -1;
> }
>
> printf("Activating master...\n");
> if (ecrt_master_activate(master))
> return -1;
>
> if( !(domain0_output = ecrt_domain_data(domain0))) {
> return -1;
> }
>
>#if PRIORITY
> pid_t pid = getpid();
> if (setpriority(PRIO_PROCESS, pid, -19))
> fprintf(stderr, "Warning: Failed to set priority: %s\n",
> strerror(errno));
>#endif
>
> sa.sa_handler = signal_handler;
> sigemptyset(&sa.sa_mask);
> sa.sa_flags = 0;
> if (sigaction(SIGALRM, &sa, 0)) {
> fprintf(stderr, "Failed to install signal handler!\n");
> return -1;
> }
>
> printf("Starting timer...\n");
> tv.it_interval.tv_sec = 0;
> tv.it_interval.tv_usec = 1000000 / FREQUENCY;
> tv.it_value.tv_sec = 0;
> tv.it_value.tv_usec = 1000;
> if (setitimer(ITIMER_REAL, &tv, NULL)) {
> fprintf(stderr, "Failed to start timer: %s\n", strerror(errno));
> return 1;
> }
>
> printf("Started.\n");
>
> while (1) {
> pause();
>
> #if 0
> struct timeval t;
> gettimeofday(&t, NULL);
> printf("%u.%06u\n", t.tv_sec, t.tv_usec);
> #endif
> while (sig_alarms != user_alarms) {
> cyclic_task();
> user_alarms++;
> }
> }
>
> return 0;
>}
>
>/****************************************************************************/
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</PRE></div><br><br><span title="neteasefooter"><span id="netease_mail_footer"></span></span>